A newspaper selected 1, 500 people from a random sample to receive a survey, and

Question

A newspaper selected 1, 500 people from a random sample to receive a survey, and 130 people returned their survey to the How could nonresponse cause the results of this survey to be biased? Those who did not respond caused a violation of the assumption of independence. Those who did respond may differ in some important way from those who did not respond. Those who did not respond represented a classic example of disjoint probability. Those who did not respond were indistinguishable from those who did not receive the questionnaire.

Explanation / Answer

b) is the right answer because the people who answered the survey might be those who had some specific views

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